api: No cpu zero trick for remove_node
api: No cpu zero trick for remove_node

storage_service::remove_node is guaranteed to run on cpu zero only.

scylladb/scylla,scylladb/scylla,kjniemi/scylla,kjniemi/scylla,scylladb/scylla,duarten/scylla,avikivity/scylla,duarten/scylla,kjniemi/scylla,scylladb/scylla,avikivity/scylla,raphaelsc/scylla,raphaelsc/scylla,raphaelsc/scylla,duarten/scylla,avikivity/scylla